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What is Primary key? Primary Key - Primary key is one of the candidate keys which uniquely identifies each row in the relation.
Define Serializable schedule Serializable schedule: An interleaved schedule of much more than one transaction is known as a serializable schedule, if it is equal to some serial
What is key ? Key - A single attribute or a combination of two or more attributes of an entity set which is used to recognize one or more instances (rows) of the set (table) is
a set of possible data value of an attribute is called??
under what condition log based recovery is feasible?
Optimistic Concurrency Control Is locking the only way to stop concurrency related problems? There exist some other ways too. One such way is known as an Optimistic Concurrency
Why Like predicate used for? LIKE predicate: The LIKE predicate searches for strings in which have a certain pattern.
What is a candidate key? Minimal super keys are known as candidate keys.
Type of views : Simple views and Difficult Views Feature Simple Views Complex Views Number of tables One
What are the various forms of data transparency? a) fragmentation transparency b) replication transparency c) location transparency
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